Perhaps you should try some spelling variations:
wang yang » wang yan, wang liang, wang yanling
yang yan » yang yang, wang yan, yang fan
yan guan » gan guan, yan yuan, yang guang
tan yang » dan yang, tan yong, tao yang
tan ying » fan ying, ran ying, tan yong
yi dang » yi yang, yi chang
yi gang » ii gang, i gang, li gang

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: wang yang yan guan ((tan yang) OR (tan ying)) ((yi dang) or (yi gang)) (hai or hadi) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yang yan guan ((tan yang) OR (tan ying)) ((yi dang) OR (yi gang)) (hai OR hadi) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yang yan guan ((tan yang) OR (tan ying)) ((yi dang) or (yi gang)) (hai or hadi) ;".
• Adding a wildcard symbol may retrieve word variants: wang yang yan guan ((tan yang) OR (tan ying)) ((yi dang) or (yi gang)) (hai or hadi) ;*.